getsockname(2) [redhat man page]

GETSOCKNAME(2)						     Linux Programmer's Manual						    GETSOCKNAME(2)

NAME

       getsockname - get socket name

SYNOPSIS

       #include <sys/socket.h>

       int getsockname(int s, struct sockaddr *name, socklen_t *namelen);

DESCRIPTION

       Getsockname returns the current name for the specified socket.  The namelen parameter should be initialized to indicate the amount of space
       pointed to by name.  On return it contains the actual size of the name returned (in bytes).

RETURN VALUE

       On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.

ERRORS

       EBADF  The argument s is not a valid descriptor.

       ENOTSOCK
	      The argument s is a file, not a socket.

       ENOBUFS
	      Insufficient resources were available in the system to perform the operation.

       EFAULT The name parameter points to memory not in a valid part of the process address space.

CONFORMING TO

       SVr4, 4.4BSD (the getsockname function call appeared in 4.2BSD).  SVr4 documents additional ENOMEM and ENOSR error codes.

NOTE

       The third argument of getsockname is in reality an `int *' (and this is what BSD 4.* and libc4  and  libc5  have).   Some  POSIX  confusion
       resulted  in the present socklen_t.  The draft standard has not been adopted yet, but glibc2 already follows it and also has socklen_t. See
       also accept(2).

SEE ALSO

       bind(2), socket(2)

BSD Man Page							    1993-07-24							    GETSOCKNAME(2)

GETSOCKNAME(2)						     Linux Programmer's Manual						    GETSOCKNAME(2)

NAME

       getsockname - get socket name

SYNOPSIS

       #include <sys/socket.h>

       int getsockname(int sockfd, struct sockaddr *addr, socklen_t *addrlen);

DESCRIPTION

       getsockname()  returns  the  current  address  to which the socket sockfd is bound, in the buffer pointed to by addr.  The addrlen argument
       should be initialized to indicate the amount of space (in bytes) pointed to by addr.  On return it contains the actual size of  the  socket
       address.

       The  returned address is truncated if the buffer provided is too small; in this case, addrlen will return a value greater than was supplied
       to the call.

RETURN VALUE

       On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.

ERRORS

       EBADF  The argument sockfd is not a valid descriptor.

       EFAULT The addr argument points to memory not in a valid part of the process address space.

       EINVAL addrlen is invalid (e.g., is negative).

       ENOBUFS
	      Insufficient resources were available in the system to perform the operation.

       ENOTSOCK
	      The argument sockfd is a file, not a socket.

CONFORMING TO

       SVr4, 4.4BSD (the getsockname() function call appeared in 4.2BSD), POSIX.1-2001.

NOTES

       The third argument of getsockname() is in reality an int * (and this is what 4.x BSD and libc4  and  libc5  have).   Some  POSIX  confusion
       resulted in the present socklen_t, also used by glibc.  See also accept(2).

SEE ALSO

       bind(2), socket(2), getifaddrs(3), ip(7), socket(7), unix(7)

COLOPHON

       This  page is part of release 3.44 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2008-12-03							    GETSOCKNAME(2)